Andriasang reports Nintendo of Japan has come clean, revealing players can download an entirely new channel called the “Zelda Data Restoration Channel” that should allow you to progress.
In the past, Nintendo has solved glitches by swapping copies of the game or players mailing SD cards with saved games, then altering them manually. That’s an option for Skyward Sword players, too, but something tells me downloading a channel, however strange, is the preferred option.
Skyward Sword’s glitch occurs “Song of the Hero,” quest, in which players are given three options how to proceed. If they choose to head towards the Lanayru Desert and complete that area first, the cutscene to trigger the subsequent legs of the journey may not pop up, rendering the game unplayable.
Nintendo of America has not announced this yet, but has confirmed there will be a downloadable fix.